Bitfinex, a Hong Kong-based bitcoin exchange, was briefly shut down a year ago after hackers stole almost 120,000 bitcoins - worth more than $65 million at the time. While the company did not reveal the exact amount lost, users on Reddit spent the better part of today anxious as the service was initially "under maintenance" for 12 hours amidst suspicious transactions on the blockchain that saw 4,736.42 BTC taken from Nicehash and their Nicehash internal wallets reporting zero balances.
NiceHash says it reached out to "to the relevant authorities and law enforcement".
More than 4,500 bitcoins worth approximately $62 million at today's prices may have been stolen from the NiceHash exchange. While not providing much in the way of details, the company did say in a statement that there had been "a security breach involving NiceHash website" and that they "are now investigating the nature of the incident and, as a result... are stopping all operations for the next 24 hours".
"We understand that you will have a lot of questions, and we ask for patience and understanding while we investigate the causes and find the appropriate solutions for the future of the service", the company said, advising users to change their online passwords as a precaution. We are fully committed to restoring the NiceHash service with the highest security measures at the earliest opportunity.
Inconvenience is an understatement - especially as so much was left in a single wallet - but the moment those coins shift, we may know more about the fate of the stolen investor funds. Even though there are fees associated with using the minimum payout, having the amount sitting in the mining pools wallet is risky. "It will be a huge uphill battle for NiceHash to overcome this breach as it's very damaging to its brand". We will endeavor to update you at regular intervals.